Method of manufacturing fasteners



Apri 29, 1930. F. G. NEUBERTH 1,756,257

METHOD OF MANUFACTURING FASTENERS Ori'ginal Filed Oct. 5, '1923 2 Sheets-Sheet 1 p i 1930. F. s. NEUBERTH 1,756,257

METHOD OF MANUFACTURING FASTENERS Original Filed 001;. 5, 1923 2 Sheets-Sheet 2 Fig-311.

portant steps of the Patented A 29, 1930 FRANKLIN G. 'NEUBEBTH, or Ansonra, connno'rrour, ASSIGNOB TO THE s. 0. AND 0.

COMPANY, OF ANSONIA, CONNECTICUT, A CORPORATION OF. CONNECTICUT METHOD OF MANUFACTURING FASTENERS Original application filedOctober 5, 1923, Serial No. 666,862, and in Germany September 13, 1923.

Divided and this: application filed December 30, 1925, Serial No. 78,414.

7 This invention relates to improvements in methods of manufacturing fasteners and is illustrated herein with reference to the manufacture of eyelets particularly adapted for blind and invisible eyeleting, of the type shown in my co-pending application for LettersPatent of the United States, Serial No. 666,862, filed October 5, 1923, of which the present application is a division. 7

The eyelet disclosed in said application for United States Letters Patent, Serial No. 666,862, has the portion of its barrel towards its entering end of a scalloped or polygonal formation, scored at the apeXes of the polygon or of the scalloping, and has the extreme entering end of its barrel blunted to provide a plane end surface of substantial width. It

is an ob ect of the presentinvention to provide a satisfactory and economical method for the manufacture of eyelets having any 0 all of these characteristics.

v In accordance with the foregoing, imherein disclosed method are the simultaneous scoring and scalloping of the eyelet barrel, and the blunting or upsetting of the entering end of the eyelet baris supported to prevent its collapse. In the fullest development of the method, the steps are performed in the order just recited though it should be noted that their utility is not limited to-their performance in this sequence. Moreover,'while the invention is herein disclosed in connection with the manufacture of the eyelet of my co-pending application, Serial No. 666,862, it should be understood that in various of its aspects its utility is" not so limited.

With the above and otherobjects in view the invention will now be described in connection with the accompanying drawings and pointed out in the claims.

In the drawings,

Fig. 1 is a perspective larged scale of an eyelet blank produced in accordance with any one of several well-kn own methods used in the manufacture of eyelets;

Figs. 2 and 3 are perspective and plan rel while its interior views, respectively, of the blank after it has been scalloped and scored in accordance with the method of the present invention;

of Fig. 7;

member 124 (Figs. 7,8 and 11) view on a much en- 3 with a recess of the eyelet blank to be operated upon. A

Renewed July 24, 1929.

Figs. l, 5 and 6 are a perspective view, a longitudinal section and a plan view, respec tively, of the blank of Figs. 2 and 3 after its entering end has been blunted, these figures showing theeyelet in its completed form ;v

Fig. 7 is a longitudinal section ofv a die used in the scalloping and scoring of the eyelet barrelj i i r 1 l 1 Fig. 8 is a section on the line VIII+VIII Fig. 9 is a perspective view of a punch V which co-operat'es with the die of Fig. 7 to scallop and score the eyelet barrel, 7 Fig. 10 is a'longitudinal section through the punch, die and eyelet during the scal loplng and scoring operation, indicating also 1n dotted lines the position of the punch relatively to the die at the conclusion of that operation;

Fig. 11 is a cross-section on the line XI-XI of Fig. 10. with the eyelet omitted;

i102 taperi'ngsomewhat from its flange to its entering end. The extreme entering end'103 is quite sharp having an almost .knife-like edge as a result of the punching operation by which the entering end of the barrel is perforated in accordance with the usual practice in manufacturing eyelets. The'blank thus formed is, in the illustrated exemplification of the invention, introduced into ahollow. die formed with a series of ribs 126.separated by grooves 128, the ribs 126 tapering off at the entering end of the die as shown at 130 in Fig. 7, thus forming an enlarged entrance13l. Conveniently, at its entering end the die is provided v132 adapted to receive the flange punch 134, illustrated inFigs. 9, 10 and 1.1, is used in co-operation with die 124. to scallop and score the eyelets. This punchis itself scalloped, as clearly shown in Figs. 9 and 11, the successive scallops meeting andforming Ward the smaller cutting edges 136. The entering end of punch 134'is tapered to facilitate its introduction into the barrel of the eyelet blank which has previously been introduced into die 124, as shown in Fig. 10. Punch 134 is provided also with a shoulder 137 which co-operates with recess 132 of die 124 properly to limit the movement of punch 134 relatively to an eyelet blank operated upon.

The punch 134 enters the portion of the eyelet barrel adjacent to the eyelet flange freely and Without obstruction but, as it passes toentering end-of the eyelet barrel, edges 136 of the punch score the interior of the barrel, cutting into the metal of the eyelet barrel a substantial distance and "finallycutting all the way through the barrel at the entering end thereof, as shown at 106,

Fig. 2. At the same time the barrel'is scalloped, being forced into the space (indicated at 138, Fig. 11) between the punch 134 and die 124 and acquiring the formation shown in Figs. 2 and 3. Punch 134 is passed through spindle 144 (Figs. 12 and die 124 approximately to the position indi cated in dotted lines at 140 in Fig. 10, after which it is withdrawn leaving the eyelet blank in the condition shown in Figs. with a thin, sharp edge 142 at its entering end.

After this the eyelet blank is placed upon a 13) having a shoulder 146 arranged to support the flange 100 of hole and a cylindrical portion 150, arranged substantially to fill the open entering end of the eyelet barrel. (Jo-operating with spindle 144 is a die 152 having a hole therethrough of a size to'be a good working fit on the cylindrical portion 150 of spindle 144. With the eyelet blank supported upon spindle 144, as indicated in F ig. 12, die 152 and spindle 144 are given relative movement so as to force die 152 against the entering end of the barrel of the blank supported upon the cylindrical'porr tion 150 of the spindle, upsetting (that is to say, shortening and thickening) as well blunting the end of the eyelet barrel, as shown at 108, Fig. 13, and giving it aliat or plane end surface 104. Die member 152 is then withdrawn and the eyelet, which now has the form shown in Figs. .4, 5 and 6, is removed from the spindle 144. After this the substan .tially completed eyelet may be subjected to any desired finishing operation.

The eyelet thus produced is well adapted to be used for blind or invisible eyeleting, as set forth in said'application for Letters Patent, Serial No. 666,862.

By reducing the depth of grooves 128 in die 124 and by correspondingly reducing the size of punch 134, the depth of the'scalloping of the-eyelet may be reduced. Indeed this "may be carried to such an extent that the ent I tering end of the eyelet barrel will take the fo'rmof a polygon each of whose sides is a 2 and 3,

sense in which it is commonly used inthe eyelet art, that is to indicate a longitudinal cut extending a substantial distance into the metal of an eyelet barrel to facilitate the splitting of the eyelet barrel when it is clenched. A mere scratching or a bending of the metal, even a sharp bend,'if without asubstantial cutting of the metal, is not considered as scoring.

Having described the invention, what I *laim as new and desire to secure by Letters Patent of the United States is:

1. That improvement in methods of manufacturing eyelets which comprises scoring and scalloping an eyelet barrel and thereafter upsetting the open entering end of the barrel to provide a blunted work-engaging end.

2. That improvement in methods oft manufacturing eyelets which comprises siinultaneously scoring and scalloping an eyelet barrel and thereafter upsetting the open entering ens oft-he barrel to provide it with a blunted work-engaging end.

3. That improvement in methods of manufacturing eyelets which comprises supporting the flange and the interior surface of an eyelet barrel and thereby ireventing its collapse and while the barrel is so held upsetting the open entering end thereof.

4. That improvement in methods of manufacturing eyelets which comprises support ing the lange and the interior surfaceof an eyelet barrel and thereby preventing its collapse but leaving the outer surface of the barrel unsupported and while the barrel is so held upsetting the open entering end thereof.

In testimony whereof I have si ned my name to this specification.

FRAWKLIN G. NEUBERTH.

CERTIFICATE OF GORREGTION.

Patent No. 1,756,257. Granted April 29, 1930, m

FRANKLIN G. NEUBERTH.

It is hereby certified that the name of the assignee in the above numbered patent should have been written and printed "The S 0 and C Company", instead of "The S. O. and (1. Company", as shown by the records of assignments in this office; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the ease in the Patent Office.

Signed and sealed this 24th day of June, A. D. 1939.

M. J. Moore, (Seal) Acting Commissioner of Patents. 

